Very cool, but from the second image it looks like it isn't perfectly symmetrical. I think its actually the paint in the middle part of the blade that is creating the illusion that it isn't at least. I like your over-all construction for this.

I've got to test another paint, chrome paint, for the sharp parts of the blade. The actual paint is too dark and don't give the "steel effect" i want.Then i will paint some trace of blood (a lot ??). Painting is not what i do the best, i'm a rookie so...

Thank you all ! If you are interested in seeing it, it will probably be displayed in the international show of Clermont-Ferrand in september. And maybe in other places like Paris, later. Unfortunately, there is no subway here in Clermont-Ferrand...